install

#!/bin/bash

ROOT_URL='https://raw.github.com/mgdelacroix/gw/master/'
FILES='gw gwactivate'
GVM_DIR="$HOME/.gvm"
RC_FILES='.bash_profile .profile .bashrc .zshrc'

function downloadFile {
    echo "== Downloading => $1"
    curl -# -O "$ROOT_URL/$1"
    chmod +x ./$1
}

function checkGVM {
    if [ ! -d $GVM_DIR ]; then
        installGVM
    fi
}

function backupRCs {
    TEMP_DIR=`mktemp -dqp $HOME`
    echo "++ Saving dotfiles to $TEMP_DIR avoid modifications during GVM installation"
    for file in $RC_FILES; do
        mv $HOME/$file $TEMP_DIR 2> /dev/null
    done
}

function restoreRCs {
    echo '++ Restoring dotfiles after GVM installation'
    for file in $RC_FILES; do
        mv $TEMP_DIR/$file $HOME 2> /dev/null
    done
    echo '++ Removing temp dir'
    rmdir $TEMP_DIR
}

function installGVM {
    echo '
== Installing GVM'
    backupRCs
    curl -s get.gvmtool.net | bash
    restoreRCs
}

checkGVM

echo '
==== Installing GW ====
'

for file in $FILES; do
    downloadFile $file
done

echo '=======================
'
echo 'GW is now installed. To start using it, run "gw help".'